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Finding the Fourth Proportional to 368,656.60, 551,948.10 and 331,331.80

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Solution

The fourth proportional to 368,656.60, 551,948.10 and 331,331.80 is: 496,065.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,656.60 : 551,948.10 = 331,331.80 : x
  2. Step 2: Convert to fraction form
    368,656.60/551,948.10 = 331,331.80/x
  3. Step 3: Cross multiply
    368,656.60x = 551,948.10 × 331,331.80
  4. Step 4: Simplify right side
    368,656.60x = 182,877,957,479.58
  5. Step 5: Solve for x
    x = 182,877,957,479.58/368,656.60
  6. Step 6: Final answer
    x = 496,065.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.